On the basis of combing and referring to the establishment conditions and selection indexes of major national parks in the world,according to the new requirements of establishing a natural reserve system with national parks as the main body and starting from China's national conditions,this paper not only combines pilot practice of national park system but also puts forward the principles,establishment conditions and identification index system for selecting national parks in China.From the three aspects of national representativeness,ecological importance and management feasibility,10 evaluation indexes for the establishing China's national parks are determined.This paper also discusses the connotation of the concepts of national significance,public benefits,ecological character,integrity and authenticity.Analyzing the feasibility of taking all natural resources assets as main body of national parks,to ensure the three China national park concepts — ecological protection priority,national representative and public welfare could be realized during the practice and build the foundation for the establishment of national park system with Chinese characteristics.